If you are trying to figure out an Option For Large Families at a Walt Disney World Resort, I have a very interesting solution. A few companies in the Orlando area rent RVs that they will come and set up on your rented camp site at Ft. Wilderness. The rates are for the camper only. You also have to take into account the amount of your camp site at Ft. Wilderness (which you are responsible for renting).
MyRVHotel.com will set up one of their RVs on your rented camp site at Ft. Wilderness campgrounds. You can choose from 3 different RV types and they sleep up to 10 people.
One of the biggest perks of renting the RV is that you get a kitchen where you can prepare your meals which will cut down on your dining bill. Plus some of these are really NICE!
Here are more Walt Disney World Resorts For Families of 5 or More.